linux/drivers/gpu/drm/radeon/r600.c

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drm/radeon: introduce kernel modesetting for radeon hardware Add kernel modesetting support to radeon driver, use the ttm memory manager to manage memory and DRM/GEM to provide userspace API. In order to avoid backward compatibility issue and to allow clean design and code the radeon kernel modesetting use different code path than old radeon/drm driver. When kernel modesetting is enabled the IOCTL of radeon/drm driver are considered as invalid and an error message is printed in the log and they return failure. KMS enabled userspace will use new API to talk with the radeon/drm driver. The new API provide functions to create/destroy/share/mmap buffer object which are then managed by the kernel memory manager (here TTM). In order to submit command to the GPU the userspace provide a buffer holding the command stream, along this buffer userspace have to provide a list of buffer object used by the command stream. The kernel radeon driver will then place buffer in GPU accessible memory and will update command stream to reflect the position of the different buffers. The kernel will also perform security check on command stream provided by the user, we want to catch and forbid any illegal use of the GPU such as DMA into random system memory or into memory not owned by the process supplying the command stream. This part of the code is still incomplete and this why we propose that patch as a staging driver addition, future security might forbid current experimental userspace to run. This code support the following hardware : R1XX,R2XX,R3XX,R4XX,R5XX (radeon up to X1950). Works is underway to provide support for R6XX, R7XX and newer hardware (radeon from HD2XXX to HD4XXX). Authors: Jerome Glisse <jglisse@redhat.com> Dave Airlie <airlied@redhat.com> Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-06-05 12:42:42 +00:00
/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include "drmP.h"
#include "radeon_reg.h"
#include "radeon.h"
/* r600,rv610,rv630,rv620,rv635,rv670 depends on : */
void rs600_mc_disable_clients(struct radeon_device *rdev);
/* This files gather functions specifics to:
* r600,rv610,rv630,rv620,rv635,rv670
*
* Some of these functions might be used by newer ASICs.
*/
int r600_mc_wait_for_idle(struct radeon_device *rdev);
void r600_gpu_init(struct radeon_device *rdev);
/*
* MC
*/
int r600_mc_init(struct radeon_device *rdev)
{
uint32_t tmp;
r600_gpu_init(rdev);
/* setup the gart before changing location so we can ask to
* discard unmapped mc request
*/
/* FIXME: disable out of gart access */
tmp = rdev->mc.gtt_location / 4096;
tmp = REG_SET(R600_LOGICAL_PAGE_NUMBER, tmp);
WREG32(R600_MC_VM_SYSTEM_APERTURE_LOW_ADDR, tmp);
tmp = (rdev->mc.gtt_location + rdev->mc.gtt_size) / 4096;
tmp = REG_SET(R600_LOGICAL_PAGE_NUMBER, tmp);
WREG32(R600_MC_VM_SYSTEM_APERTURE_HIGH_ADDR, tmp);
rs600_mc_disable_clients(rdev);
if (r600_mc_wait_for_idle(rdev)) {
printk(KERN_WARNING "Failed to wait MC idle while "
"programming pipes. Bad things might happen.\n");
}
tmp = rdev->mc.vram_location + rdev->mc.mc_vram_size - 1;
drm/radeon: introduce kernel modesetting for radeon hardware Add kernel modesetting support to radeon driver, use the ttm memory manager to manage memory and DRM/GEM to provide userspace API. In order to avoid backward compatibility issue and to allow clean design and code the radeon kernel modesetting use different code path than old radeon/drm driver. When kernel modesetting is enabled the IOCTL of radeon/drm driver are considered as invalid and an error message is printed in the log and they return failure. KMS enabled userspace will use new API to talk with the radeon/drm driver. The new API provide functions to create/destroy/share/mmap buffer object which are then managed by the kernel memory manager (here TTM). In order to submit command to the GPU the userspace provide a buffer holding the command stream, along this buffer userspace have to provide a list of buffer object used by the command stream. The kernel radeon driver will then place buffer in GPU accessible memory and will update command stream to reflect the position of the different buffers. The kernel will also perform security check on command stream provided by the user, we want to catch and forbid any illegal use of the GPU such as DMA into random system memory or into memory not owned by the process supplying the command stream. This part of the code is still incomplete and this why we propose that patch as a staging driver addition, future security might forbid current experimental userspace to run. This code support the following hardware : R1XX,R2XX,R3XX,R4XX,R5XX (radeon up to X1950). Works is underway to provide support for R6XX, R7XX and newer hardware (radeon from HD2XXX to HD4XXX). Authors: Jerome Glisse <jglisse@redhat.com> Dave Airlie <airlied@redhat.com> Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-06-05 12:42:42 +00:00
tmp = REG_SET(R600_MC_FB_TOP, tmp >> 24);
tmp |= REG_SET(R600_MC_FB_BASE, rdev->mc.vram_location >> 24);
WREG32(R600_MC_VM_FB_LOCATION, tmp);
tmp = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;
tmp = REG_SET(R600_MC_AGP_TOP, tmp >> 22);
WREG32(R600_MC_VM_AGP_TOP, tmp);
tmp = REG_SET(R600_MC_AGP_BOT, rdev->mc.gtt_location >> 22);
WREG32(R600_MC_VM_AGP_BOT, tmp);
return 0;
}
void r600_mc_fini(struct radeon_device *rdev)
{
/* FIXME: implement */
}
/*
* Global GPU functions
*/
void r600_errata(struct radeon_device *rdev)
{
rdev->pll_errata = 0;
}
int r600_mc_wait_for_idle(struct radeon_device *rdev)
{
/* FIXME: implement */
return 0;
}
void r600_gpu_init(struct radeon_device *rdev)
{
/* FIXME: implement */
}
/*
* VRAM info
*/
void r600_vram_get_type(struct radeon_device *rdev)
{
uint32_t tmp;
int chansize;
rdev->mc.vram_width = 128;
rdev->mc.vram_is_ddr = true;
tmp = RREG32(R600_RAMCFG);
if (tmp & R600_CHANSIZE_OVERRIDE) {
chansize = 16;
} else if (tmp & R600_CHANSIZE) {
chansize = 64;
} else {
chansize = 32;
}
if (rdev->family == CHIP_R600) {
rdev->mc.vram_width = 8 * chansize;
} else if (rdev->family == CHIP_RV670) {
rdev->mc.vram_width = 4 * chansize;
} else if ((rdev->family == CHIP_RV610) ||
(rdev->family == CHIP_RV620)) {
rdev->mc.vram_width = chansize;
} else if ((rdev->family == CHIP_RV630) ||
(rdev->family == CHIP_RV635)) {
rdev->mc.vram_width = 2 * chansize;
}
}
void r600_vram_info(struct radeon_device *rdev)
{
r600_vram_get_type(rdev);
rdev->mc.real_vram_size = RREG32(R600_CONFIG_MEMSIZE);
rdev->mc.mc_vram_size = rdev->mc.real_vram_size;
drm/radeon: introduce kernel modesetting for radeon hardware Add kernel modesetting support to radeon driver, use the ttm memory manager to manage memory and DRM/GEM to provide userspace API. In order to avoid backward compatibility issue and to allow clean design and code the radeon kernel modesetting use different code path than old radeon/drm driver. When kernel modesetting is enabled the IOCTL of radeon/drm driver are considered as invalid and an error message is printed in the log and they return failure. KMS enabled userspace will use new API to talk with the radeon/drm driver. The new API provide functions to create/destroy/share/mmap buffer object which are then managed by the kernel memory manager (here TTM). In order to submit command to the GPU the userspace provide a buffer holding the command stream, along this buffer userspace have to provide a list of buffer object used by the command stream. The kernel radeon driver will then place buffer in GPU accessible memory and will update command stream to reflect the position of the different buffers. The kernel will also perform security check on command stream provided by the user, we want to catch and forbid any illegal use of the GPU such as DMA into random system memory or into memory not owned by the process supplying the command stream. This part of the code is still incomplete and this why we propose that patch as a staging driver addition, future security might forbid current experimental userspace to run. This code support the following hardware : R1XX,R2XX,R3XX,R4XX,R5XX (radeon up to X1950). Works is underway to provide support for R6XX, R7XX and newer hardware (radeon from HD2XXX to HD4XXX). Authors: Jerome Glisse <jglisse@redhat.com> Dave Airlie <airlied@redhat.com> Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-06-05 12:42:42 +00:00
/* Could aper size report 0 ? */
rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
}
/*
* Indirect registers accessor
*/
uint32_t r600_pciep_rreg(struct radeon_device *rdev, uint32_t reg)
{
uint32_t r;
WREG32(R600_PCIE_PORT_INDEX, ((reg) & 0xff));
(void)RREG32(R600_PCIE_PORT_INDEX);
r = RREG32(R600_PCIE_PORT_DATA);
return r;
}
void r600_pciep_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
{
WREG32(R600_PCIE_PORT_INDEX, ((reg) & 0xff));
(void)RREG32(R600_PCIE_PORT_INDEX);
WREG32(R600_PCIE_PORT_DATA, (v));
(void)RREG32(R600_PCIE_PORT_DATA);
}